[Bug libstdc++/69945] Provide an equivalent of __libc_freeres to release emergency EH pool memory

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69945

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Unversioned symbols in otherwise versioned shared library?  On some systems
impossible, on others possible through ugly hacks.  IMHO we don't want that.